Question

1. Find the area under the standard normal curve to the left of z = 1.66....

1. Find the area under the standard normal curve to the left of z = 1.66.

2. Find the area under the standard normal curve between z = -1.75 and z = 0.96.

3. Find the z-score for which the area to its right is 0.67.

4. A normal population has mean 176=m and a standard deviation .38=s What proportion of the population is more than 185?

Math   Statistics-And-Probability   
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Answer #1

We know that,

1.

2.

3. z-score

4.Given, mean and standard deviation

  

The proportion of the population is more than 185 is 0.4064.

  

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